Right - I have now had chance to look at the register transcripts for South Hinksey, there are 2 entries for the surname Gill
A baptism 1863 Nov 22nd Mary Jane d (age 15 years in pencil) of Absolom & Mary Gill - carpenter of New Hinksey - privatly
and a burial Jan 20th 1867
Mary Gill aged 48 of New Hinksey
If someone could find Absolom in 1871 it might give some more clues

Debbie